diff --git a/src/Command/DoctrinevizCommand.php b/src/Command/DoctrinevizCommand.php
index a324072..9e74bad 100644
--- a/src/Command/DoctrinevizCommand.php
+++ b/src/Command/DoctrinevizCommand.php
@@ -161,7 +161,7 @@ public function execute(InputInterface $input, OutputInterface $output)
         $graphviz = new Graphviz($format, $binary);
         if (!$path) {
             if ('dot' === $format) {
-                $output->writeln((string)$graph);
+                $output->writeln((string) $graph);
             } else {
                 $graphviz->display($graph);
             }
diff --git a/src/Graphviz/Graphviz.php b/src/Graphviz/Graphviz.php
index a7c6c1c..0f6558f 100644
--- a/src/Graphviz/Graphviz.php
+++ b/src/Graphviz/Graphviz.php
@@ -164,7 +164,7 @@ protected function execute($format, ...$args)
     {
         $process = new Process(sprintf(
             $format,
-            ...array_map(function($arg, $index) use ($format) {
+            ...array_map(function ($arg, $index) use ($format) {
                 return 0 === $index && 0 === strpos('%s', $format) ? escapeshellcmd($arg) : escapeshellarg($arg);
             }, $args, array_keys($args))
         ));
diff --git a/test/DoctrinevizTestCase.php b/test/DoctrinevizTestCase.php
index ad57e7e..cd131c6 100644
--- a/test/DoctrinevizTestCase.php
+++ b/test/DoctrinevizTestCase.php
@@ -41,4 +41,4 @@ protected function setMethodAccessible($className, $methodName)
 
         return $method;
     }
-}
\ No newline at end of file
+}